Food:
The ground finches have their name because most of their gathering of food (foraging) happens on the ground. The medium ground finches eat small insects and the fruit and seeds of plants, and the fruit and seeds of cactus. The cactus finch gets its food primarily from cactus.

Breeding:
The medium ground finches breed after the first big rains of the wet season. The fledglings grow to adult size within one year.